Adjustable brake-head.



B. L. WHITE.

ADJUSTABLE BRAKE HEAD.

APPLICATION FILED JUNE 27, 1910.

1,022,806.- Patented Ap1n9, 19 12.

' A Mvwsssas INVENTOR 9 iow eo L. W547:

.To all whom it may concern."

. Be it known that I, EDWARD L. WHITE, :1

' UNITED sirATEs m m OFFICE.

EDWARD 1.. WHITE, or 01110460, Immors', se ment I-o fenrcnoo RAILWAYEQUIP- Mum comrsmz, or cmcaeo, rumors, a conrom'rron or ILLINOIS.

Armenians ranks-HEAD.

' Specification of Letters Patent,

I Patented Apr. 9, 1912.

Original application filed July 6, 1909, Serial No. 503,648. Divided andthis application 'flld June 27, 1910. i

- I Serial Io. 568,111. i

- citizen'of' the United States, residing at Chicago, Illinois, haveinvented a certain new and useful Improvement in Adjustable BrakeHe'ads, of which the following is a full, clear, and exact description,such as will enable others skilled in the art to which it appertains tomake and use the same, ref

erence being had to the accompanying draw- Figure 1 is an endelevational view, partly in section, of my improved adjustable brakehead. Fig. 2 is adetail view of the thrust block or part of the brakebeam on which the head is mounted.- I

This invention relates to adjustable brake heads and is adivision of anapplication filed by me'July 6, 1909, Serial Number The object of my'inventionis to generally improve the construction of automaticallyadjustable brake heads and to provide Sim-- ple and inexpensive meanswhereby the brake heads are arranged upon the ends of y the beam in suchmanner that they will my. improved brake head can be mounted upon theend of a solid beamformed to receive it.

2 is a segmentalgroove in the thrust block which is preferably providedwith a series of teeth or serrations 3. I

4 designates the brake head which is pro vided with a circular openingor socket to receive the sleeve or thrust block 1. The

rear wall of this socket is slotted or formed with an opening which ispreferably protected by a vertically disposed housing 6, but thishousing is not necessary'or essential. to 'my invention.

r I 7 is a friction block arranged in the opening in the brake head andcooperating with the part of the beam on which said head is mounted,said friction block extending intothe groove as shown in Fig. 1 so thatwhen the brake head isin the position shownthe or posiv friction blocklocks it against'longitudinal movement of the head, but-permitsautobeam." I

- l t-indicates a flat or leaf spring substzi'ntially semi-circular inform, the ends thereof. being bent outwardly, one of said ends engagingthe brake head by means of a pin 'or rivet 15, while the opposite end ispro-" vided with an open-ingthrough which passes a bolt 17 upon which isthreaded a nut 16. An expansive coil spring 18 is preferably located onthe bolt 17 between the end of the spring 14 and a washer or springfollower- .matic rotary'adjustment of said head on the adjust .itself onthe end. of the'beamwhen.

the brakes are applied. If desired; afterthe head adjusts itself, thenu'tfmay be turned down so as to firmly hold the head in position andnecessitate considerable power to move the head on the beam. For

.purposes' of automatic adjustment, the leaf spring 14: and the coilspring 18 should be only tensioned sufiiciently to'hold the brake headin position against movement by gravity or from shocks and jars. l

Instead of having the friction block 7 separate, it is obvious that itcould beriveted in position to the spring 14 and, indeed, for thatmatter, the friction .block "could be formed as an integral part of saidspring or dispensed with entirely, in which event the spring woulddirectly engage the part of the brake beam 'on which it is mounted.

What. I claimis:

1. In a brake beam, the combination with a brake head, a leafspring'arranged externally the head and whose ends are retained by thehead, and means cooperating with said spring whereby the head" is heldin place and'is capable of automatic adjustment.

2. A device of the character described comprising a brake head, a brakebeamcarrying the head, and a" leaf spring coop crating with the beam,"the ends of said spring being turned outwardly and engaging portions ofthe head. a

3. A device of the character described comprising a brake head,abrake-beam carrying the head and having a circumferential groove, andan eifteriorly-arranged leaf 7 50 the beam and the head, the said springhavspring embracing a portion of said head, the

1 ends of said leaf spring being attached to head, the ends of said leafspring being attached to said head and the middle portion thereofpassing through an opening in the head, whereby the head is held inplace on the beam and is capable of automatic adjustment therearound,and the said groove being only on one side of said beam whereby when.the brake head is turned a portion of a revolution to displace saidgroove, with respect to its cooperating part, sald head may be removedfrom the beam.

5. A device of the character described J comprising a brake head and acurved leaf spring arranged externally of the head and sprung around thebeam for holding the head in adjusted position, the said spring havingits ends retained by the head.

6. A device of the character described comprising a brake head, a brakebeam carrying the head and having a transverse recess therein, and acurved leaf spring sprung around the said beam and coiperating therewithin said recess and having its ends retained by the said head.

7. A device of the character described comprising a brake head having anopening thercthrough, a brake beam extending through the opening in saidhead and having a transverse recess therein, and a leaf spring sprungover the beam in the said recess and having its ends retained by thesaid head,'said recess coming flush with the outer surface of the beamon at least one side thereof whereby the bearing surface between thebeam and the head is increased.

8. A device of the character set forth comprising a brake head, a brakebeam carrying the head, a spring member arranged externally of the headand sprung over the beam for maintaining adjustment between ing its endportions retained by the head, and a block interposed between the springand the part of the beam on which the head is mounted.

9. In combination, a brake beam, a brake head, and a leaf spring, thelatter having its ends secured in position on the head and having itsmiddle portion passing through an opening in the head and cooperatingwith friction means whereby the adjustment of the head on the beam ismaintained.

10. A device of the character set forth comprising a brake head, a brakebeam carrying the head, and a spring member sprung over the beam havingits ends turned outwardly and retained by the-head. I

11. A device of the character described comprising a brake head, a brakebeam carrying the head, and a curved leaf spring sprung around the beamand gripping the latter, the said spring having its ends detained by thehead, for purposes'substantially as described.

12. A device of the character described comprising a brake head, a brakebeam carrying the said head and having a transverse recess therein, anda curved leaf spring sprung around the said beam in the said recess andhaving its ends detained by the said head, for purposes substantially asdescribed.

13. A device of the character described comprising a brake head havingan opening therethrough, a brake beam extending through the opening in'the said head and having transverse recesses therein, and a leaf springsprung over the beam in the said recesses and having 'its ends detainedby the said head, the said recesses coming flush with the outer surfaceof the beam on at least one side 'thereof whereby the bearing surfacebetween the beam and the head is increased, substantially as set forth.

let. A device of the character set forth comprising a brake head, abrake beam carrying the head, and a spring member sprung over the beamand gripping the latter, the said spring member having its end portionsdetained by the head, substantially as set forth.

1.5. A device of the character set forth comprising a brake head, abrake beam carrying the head, and a spring member sprung over the beamand having its ends turned outwardly and detained by the head, sub- E.T. WALKER, M. F.-HUiv'rooN.

